VoiceTone D1 thickens your live vocals with realistic doubling emulations, octaves, and detune effects in an easy-to-use pedal. The doubling effect in VoiceTone D1 incorporates TC-Helicon's research into differentiating pitch-shifted voices from your lead voice to produce convincing group unison vocal effects. Single and multi-voice natural doubling styles are available including octave shifted variants, classic fixed detune effects and even a group shout for extra fun. Gaining access to the studio quality sounds and intelligent processing of VoiceTone singles is as simple as plugging in your mic and turning the effect on. Of course, you can always change the style or the amount of effect, but you shouldn't need to unfold the manual unless you're making a fire. Each VoiceTone single shares the same genes: a clean, quiet mic preamp that rivals high-end touring mixers, a die-cast metal case, rubberized no-slip base, studio quality analog to digital conversion, and the same quality processing you'd expect from our flagship vocal processors like VoiceLive 2. The revolutionary and patent pending Mic Control circuit is built into each VoiceTone single pedal. This allows TC-Helicon's MP-75 Modern Performance Vocal microphone's thumb switch to turn your VoiceTone single's effect on and off. Picture having the freedom to kick-in your vocal effect while working the stage, not gazing at your feet. It gets really cool when you chain multiple VoiceTone singles pedals together and control each one independently or turn them all on or off in combination.